[Qemu-devel] ppc64-linux-user broken since "PPC: Unify dcbzl code path" ?

[Riku Voipio]

Hi,

While testing my linux-user smoke-testing setup, I noticed that 
with current qemu head:

./ppc64-linux-user/qemu-ppc64 ../../qemu-smoke/ppc64/busybox ls
busybox: malloc.c:3096: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char 
*) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, 
fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned 
long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * 
(sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 
0x1) && ((unsigned long)old_end & pagemask) == 0)' failed.
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted (core dumped)

With a bisect run, the following commit appear breaks this:

8e33944f8c648e579a2827ae6f30e4d66ee87f96

    PPC: Unify dcbzl code path

Indeed, after reverting the same command runs fine.  

./ppc64-linux-user/qemu-ppc64 ../../qemu-smoke/ppc64/busybox ls
Makefile                 coroutine-ucontext.d     qapi-generated  
....

The same commit appears to break running 32bit static busybox with 
qemu-ppc64abi32,
But I guess I am supposed to use qemu-ppc instead (which works both before and 
after the commit).

The static busybox binary is from debian/ppc64, 

BusyBox v1.20.2 (Debian 1:1.20.0-6) multi-call binary.

I've also uploaded it to:

http://people.linaro.org/~riku.voipio/busyboxen.tgz

Riku